• Magn Reson Imaging · Dec 2004

    Simultaneous EEG-fMRI acquisition: how far is it from being a standardized technique?

    • Girolamo Garreffa, Marta Bianciardi, Gisela E Hagberg, Emiliano Macaluso, Maria Grazia Marciani, Bruno Maraviglia, Manuel Abbafati, Marco Carnì, Ivo Bruni, and Luigi Bianchi.
    • Laboratorio Neurofisiopatologia, IRCCS Fondazione S. Lucia, 00179 ROMA, Italy; Enrico Fermi Center, 00184 Rome, Italy.
    • Magn Reson Imaging. 2004 Dec 1; 22 (10): 1445-55.

    AbstractSimultaneous EEG-fMRI is a powerful tool to study spontaneous and evoked brain activity because of the complementary advantages of the two techniques in terms of temporal and spatial resolution. In recent years, a significant number of scientific works have been published on this subject. However, many technical problems related to the intrinsic incompatibility of EEG and MRI methods are still not fully solved. Furthermore, simultaneous acquisition of EEG and event-related fMRI requires precise synchronization of all devices involved in the experimental setup. Thus, timing issue must be carefully considered in order to avoid significant methodological errors. The aim of the present work is to highlight and discuss some of technical and methodological open issues associated with the combined use of EEG and fMRI. These issues are presented in the context of preliminary data regarding simultaneous acquisition of event-related evoked potentials and BOLD images during a visual odd-ball paradigm.

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